I got a black 128GB mini just after launch day. It replaced an original SE, which replaced a 5. I still think the 5/5S/SE is the most coherent design of all iPhones, but most people clearly prefer them larger. One of the reasons I got the mini was the return to the squared edges, though it's not quite as good in the larger form.
I do like the mini, but I find the battery life disappointing. When my SE was new I could go 4-5 days between charges if I wasn't doing much with it, but the mini is lucky to get 3 days. It does a lot more of course, but I am not looking forward to having it once the battery wears down a bit.